Catchment louvers for cool chambers, for preventing the precipitation of moisture on the perishable goods stored therein



April 16, 1929. J. Mel.. MAXWELL 1,709,730

cnam/[ENT LoUvERs Fon cooL CHAMBERS FOR PREVENTLNG was PRECIPITATIoN OF MOISTURE 0N THE PERISHABLE GOODS STORED THEREIN Filed Jan. 12, 1928 avm.;

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UNITED STATES PATENT forFicl-z.

.Tome normen MAXWELL, 'or DUNEDN, NEWS cmcmlENT Louvnns ron cooL CHAMBERS, :son rnnvnurina 'rmi rnEcnrrA'rroN or nors'runn on Tim. rmsmnn Goons s 'ronnn 'man1-mi.

Application lell January 12, 19.28.` Serial K0. 243,288.

This invention relates to catchment louvers adapted for cool chambers .disposed underneath the pipes in which the cold brine is circulated, or in which the change of state of the refrigerating medium takes place.

The present invention has for its object certain improvements in apparatus for the quality ofthe goods, and is injurious to the 204 wood. lining and fittings of the chamber.

The only ,cooling .pipes required are those located underneath the ceiling of the cool chamber. Cooling pip'esare not required at 1 the sides or the ends of the chamber, as this latter construction retards the movement of the heavier lcold air and prevents it from absorbing heat fromv the warmer air surrounding the goods.

My invention consists of a series of parallel, vertically and longitudinally inclined sheet metal louvers, secured in a metal frame formed to suit the configuration of the chamber. The louvers are arranged in the frame to provide the maximum space between each pair for the downward movement of the cold air.

invention further consists in the novel construction of the longitudinal channels provided at the lower edge of each louver,

40 for conveying moisture from the upper and under surfaces of the louvers to a trans-A verse collecting trough, which is secured to the metal frame at thelowest point of the louvers.

My system of louvers for preventing the precipitation of moisture upon the perishable goods stored in cool chambers, may be readilyadapted to vessels provided with insulated chambers or holds, for the carriage of such perishable commodities, from the loading port, to the port of discharge.

But in order that the invention. may be better understood, reference will nowv be made tov the accor'npanyil'ig ,drawings which illustrate my invention, .wherein like andl corresponding parts are designated by similar reference numbers throughout the several views, in which Figure l-is'a transverse section (broken) of a cool chamber on the plane indicated byv the dotted line 'B, B, of Figure 2.

Figure 2is a longitudinal section (broken) of a cool chamber on the plane indicated by the dotted line A, A, of Figurel.4

Figure 3 is a fragmentary transverse sec tion showing a pair of louvers in the frame,-

in the horizontal'position. y A

Referring to the drawings, C is the cool chamber, having the usual innerand outer walls, or lining -2, between' which is the insulating material 1. f .x s

The cooling pipes 3 in which the cold brine is circulated, or in'which the changev of state of the refrigeratin'g medium takes place, may be suspended under the ceiling of the chamber by the pipes or tubes d which rest in suitable notches formed in the ends of the brackets 5, the bracket 5 bein secured.

to the inner-walls or lining 2 of t e chamber CT l '.lhe only cooling medium pipes required are those ,suspended under the ceiling of the chamber C, the cold brine or refrigerating medium may be caused to pass into the coils of pipes 3 by way of the pipe 3b, the outlet by way of the pipe 3a.

A metal frame 6, is preferably constructed of galvanized sheet metal formed to suit the configuration of the chamber, the upper edge ofwhich is bent over to embrace the wire 6 extending around the boundary of` the frame 6 to provide rigidity thereto.

- Referring to Figure 1, a series of louvers Y 8 are shown in transverse section `on the plane as indicated by the dotted line B, B, of Figure 2. The louvers 8 when secured in the frame 6 are inclined to the vertical at approximately 45 degrees, and having a longitudinal inclination of, from 5 to l0 degrees.

The ends ofthe louvers are bent over to form the flanges 10, for attachment, by rivets or bolts 7 to the sides of the frame 6.

The lower edge of the louvers 8 are bent at right angles'to their vertical plane, as at 9, `:torming the channel 11 to receive any moisture that may trickle-from 'the upper.

j surface of the louvers.

. An extension 401:' the sheet metal forming l -A lthe channel 11 is turned round and underneath it, as at 9, a portion of this extension.

overlapping the lower edge of the louver, the outer e ge'of. this overlapping portion is turned in an upward direction, as at l9,

forming the channel 12 which receives any moisture that may triclxl surface of thelouven Thechannels 11 and 12 form an integral part of the louvers 8, and strengthen them to .resist longitudinal sagging. Further, the channels 11 and 12 provide a compact arrangement for receiving moisture from the up er and under surfaces of the louvers 8,.

drain pipe oripes 15, from the collecting trough 13, pre erably communicate with the -outside of the hamber, provided with a cock or valve (notgshown in the drawings) for .30 collecting trough 13, also, preventing any `exchange of heat from the drawing off the liquid accumulating in the outside atmosphere to the chamber.

The frame 6 with the louvers in positionA therein, issuspended'by inserting the pins 16 into orifices providedin the brackets 5, the lower edges of the frame 6 resting thereon.

Having thus fully described my invention,

e down the under 'what I claim as. new, and desire to secure by Letters Patent is y 1'. In a cool chamber means for preventing the precipitation of-moisture upon the goods stored therein, comprising a metal frame to t 'in the chamber, a series of spaced parallel louvers secured therein, each of' the said louvers having a longitudinal channel on each side. of its lower edge, one I channel receiving and conveying moisture or precipitation from theupper inclined surface of the louver, the other channel receiv-v ing and conveying moisture from the-under surface of the louver, and a collecting trough on the metal frame into which the said channels discharge, substantially as set forth.A

2. In a refrigeratin device,- a casing, an

louvers inclined to the vertical and arranged in spaced relation within and carried by the frame, each of said louvers being providedl with a reinforcing and moisture-directing.

.lower edge of,which one portion is doubled upon itself at right angles to the body of the louver and terminates in a projecting uplturned terminal, the doubled portion extending on one side of the louver and the upturned terminal extending on the otherside of said louver, said upturned terminal ex-A tending at a right angle to the body of said moisture-directmg lower edge, and a drain carried by the frame and into which all of the moisture-directing edges empty.

In testimony whereof, I have signed my name to this specification at Dunedin this 15th day of December, 1927.

JOHN MCL. MXWELL.

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